Process of making nuts.



APPL N'F B.1a,1914. 19176304. Patented Mar.28,1916.

@Y WM TTUHNEYS .of East Orange,

.ALLAN H. JONES, 0F EAST ORANGE, NEW JERSEY,

PROCESS or MAKING NUTS.

Specication of Letters Patent.

Patented Mar. 28, 1916.

Application led February 18, 1914. Serial No. 819,375.

To all whom t may concern:

Be it known that I, ALLAN I-I. JONES, a citizen of the United States,and a resident in the county of Essex and State of New Jersey, haveinvented a new and Improved Process of Making Nuts, of

which the following is a full, clear, and'exact description.

My invention relates to a process of making helical nuts.

An object thereof is to provide a simple, inexpensive and efficientprocess whereby a longitudinal toothed bar is wound into a helix withthe teeth on the bar forming an interior, continuous thread. Theso-formed helical member can then be severed into sections ofpredetermined length, thereby forming helicalnuts which are resilientand selflocking.

vao

p 7 on which teeth` 8 Reference is to be had to the accompanyingdrawings forming a part of this specification, in which like charactersindicate corresponding parts in all the `views and in which:

Figure 1 is a bolt provided with a nut formed by my process; Fig. 2 isan end view Aof the nut; Fig. 3 is a longitudinal section therethrough;and Fig. 4 is a plan view of a portion of a toothed bar before the sameis wound into a helix.

Referring to the drawings, 5 represents a nut which is formed of anelongated member are /formed diagonally by any suitable means. Theelongated member is then wound into a helix so as to'bring the diagonalteeth in alinement to form a continuous, predetermined thread within thehelix formed. The so formed helix is then severed into sections ofpredetermined length, each section forming a nut. It may be also statedthat the nut so formed is provided with a helica slit "in the bodythereof.

The nut so formed when wound has its interior diameter slightly lessthan the diameter of the bolt; and when said nut is hardened itcontracts still further, thus increasing the frictional resistancebetween the thread `of the bolt and the threads formed in the nut. 'Thisdifference in diameter permits the nut, which is resilient due to itsstructure, to grip the bolt and lock itself thereon. The slightexpansion of the nut, due to the difference of the diameters between thethreads in the nut and 0n the bolt, produces enough friction to preanysuitable wrench,

vent the movement of the nut on the boltv that may be caused byvibration, which is the general cause ofthe unscrewing o-f nuts.

The slit 6, which is formed in the nut by windlng the same` from anelongated member lnto a helix, is caused to contract when said nut onthe bolt comes in contact with the means which the bolt is supposed tobind. This decrease in width of the slit distorts sllghly the alinementof the threads and thus increases the binding action between the threadof the bolt and that of the nut and also decreases the chances of thenut unscrewing itself from the bolt. Furthermore, the helix can be soformed as to cause the same to decrease in size when the nut hastightened on the bolt, thus increasing the binding action between th'ethreads of the bolt and the nut.

It is understood that a nut so formed can have its exterior surface soshaped as to fit although the ordinary cylindrical surface ispreferable, as the same can be handed with a Stillson wrench; or,diametrlcally opposite, flattened portions can be provided so that thesame can be engaged by an ordinary wrench.

It will be noted that a nut formed as described will be self-expandingand contracting, which is a very important feature, affording a slightdistortion in the continuity of the threads in the nut, which` gives aneiicient grip to the nut on the bolt. A nut as described can bemanufactured very cheaply in view of the fact that a long traction ofthe helix when the nut is tight-` ened on the bolt to tighten themembers engaged by the bolt.

Having thus described my invention, I

-claim as new and desire to secure by Letters Patent:

1. The process for making nuts consisting in forming teeth on one sideof an elongated member, then winding the so-toothed member into a helixwith said teeth forming an interior thread.

2. The process for making nuts consisting in forming teeth on one sideof an elongated member, then Winding the so-toothed member into a helixwith said teeth forming an interior thread, the direction of the helixformed by the elongated member being op'- posite to the direction of thethread.

In testimony whereof I have signed my 13 name to this yspecification inthe presence of two subscribing Witnesses.

ALLAN H. JONES.

Witnesses:

BENEDiCT JoFFE, PHILIP D. RoLLHAUs.

